The Butler is getting ready (video proof)

Monday was the day that college sports once again shifted, with schools joining new conferences, leaving old friends and one conference that you will be hearing plenty about (The American) starting from Ground Zero.

One of the moves has Butler, a basketball standard-bearer in the last few years, joining the “not your father’s” Big East.

Much preparation has gone into these moves (although as of Monday the Big East web site was still “under construction”), no where as detailed it seems as in Indianapolis at Butler.

The video below, produced by a student at Butler, is well worth your 2:23.

Before that, here’s a primer on what changed Monday:

It was a big day for the Atlantic Coast Conference, which welcomed Pittsburgh, Syracuse and Notre Dame to the league with a celebratory news conference/flag planting in New York City. Other leagues took a more low-key approach.

Here’s a look at just a few of the dozens of conference switches in Division I that became official on July 1.

American Athletic Conference opened for business and Memphis, Central Florida, SMU and Houston left Conference USA to become members of the conference formerly known as the Big East. (UConn is for now an enthusiastic member).

The new Big East is up and running. The basketball-centric league was created by old Big East members Villanova, Georgetown, St. John’s, Providence, Seton Hall, Marquette and DePaul. Joining them on Monday was Butler, Xavier and Creighton.

Charlotte, Florida Atlantic, Florida International, Louisiana Tech, Middle Tennessee, North Texas, Old Dominion and Texas-San Antonio all became members of Conference USA, as the league restocks after being gutted by the American.

Georgia State, UT-Arlington and Texas State are now in the Sun Belt, as the conference restocks after being gutted by C-USA.

The Mountain West adds Utah State and San Jose State from the Western Athletic Conference, which is now out of the football business.

Coming in 2014: Maryland and Rutgers to the Big Ten. Louisville to the ACC. East Carolina, Tulsa and Tulane to the American. Georgia Southern and Appalachian State join the Sun Belt.